V90 Mixture Preparation Error

I'm having a problem with my 2020 Volvo V90 diesel (186929 km). I'm getting a mixture preparation error, leading to reduced engine power, check engine light, rough running, jerking during acceleration, and occasional stalling. Could this be a defective catalytic converter or a faulty mass airflow sensor? I haven't checked the spark plugs or throttle body yet.

4 comment(s)

Hey, I had something similar on my V90. Reduced power and rough running. Did you check the injectors? Seems like it could be a rich mixture problem if it stalls.

Thanks. Could you elaborate on checking the injectors? Are you referring to the injection valves themselves, or is there a specific test you would recommend?

Yeah, the injection valves/injectors themselves. If one's faulty, it messes with the fuel mixture. Honestly, with those symptoms, I'd get it to a workshop. Could be tricky to diagnose properly without the right gear.

I appreciate the advice. It turned out to be a defective injector, as you suggested. The repair cost 515€. Thanks for pointing me in the right direction.

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